Merge branch 'tb/config-core-filemode-check-on-broken-fs'

Some filesystems assign filemodes in a strange way, fooling then
automatic "filemode trustability" check done during a new
repository creation.

* tb/config-core-filemode-check-on-broken-fs:
init-db: improve the filemode trustability check

diff --cc builtin/init-db.c
Simple merge